Mechanical Adjustments; Electrical Adjustments; Tape Deck Section - Sony XR-M510 Service Manual

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MECHANICAL ADJUSTMENTS

1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head
rubber belt
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
• Torque Measurement
Mode
Forward
Forward
Back Tension
Reverse
Reverse
Back Tension
FF, REW
• Tape Tension Measurement
Mode
TE
L 13942296513
Forward
Reverse
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SECTION 5
pinch roller
capstan
Torque Meter Meter Reading
2.95 – 6.73 mN•m
CQ-102C 30 – 65 g•cm
(0.42 – 0.90 oz•inch)
0.05 – 0.44mN•m
CQ-102C 0.5 – 4.5 g•cm
(0.01 – 0.06 oz•inch)
2.95 – 6.73 mN•m
CQ-102RC (25 – 55 g•cm)
(0.42 – 0.90 oz•inch)
0.05 – 0.44mN•m
CQ-102RC 0.5 – 4.5 g•cm
(0.01 – 0.06 oz•inch)
5.89 – 19.61 mN•m
CQ-201B 60 – 200 g•cm)
(0.83 – 2.78 oz•inch)
Tension Meter Meter Reading
more than 90 g
CQ-403A
(more than 3.18 oz)
more than 90 g
CQ-403R
(more than 3.18 oz)
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ELECTRICAL ADJUSTMENTS

8
TEST MODE
<Set the Test Mode>
1. Turn ON the regulated power supply. (All LEDs on the set
lights up, and the clock is displayed.)
Note: Press the
2. Push the preset
3. Push the preset
4. Press the preset
5. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
1. Push the

TAPE DECK SECTION

Tape Speed Adjustment
Setting:
test tape
WS-48A
(3 kHz, 0 dB)
Procedure:
1. Put the set into the FWD PB mode.
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3 6 7 1 3
2. Adjust adjustment resistor for inside capstan motor so that the
reading on the frequency counter becomes in 3,015 Hz.
Specified Value: 2,955 to 3,075 Hz
Adjustment Location: See page 20.
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SECTION 6
2 9 9 4 2 8
[OFF]
button, if the clock is not displayed.
[4]
button.
[5]
button.
[1]
button for more than two seconds.
[OFF]
button.
0 dB=0.775 V
frequency counter
10 k Ω
+
set
–
AUDIO OUT REAR jack (CN300)
1 5 0 5 8 2 9 9 4
m
co
XR-M510
9 9
2 8 9 9
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